TWI481833B - Apparatus and methods for computing cumulative light quantity - Google Patents

Description

Light quality accumulation calculation device and method

The present invention relates to a light quality accumulation calculation device and method for measuring light quality accumulation data of a specific spectral wavelength to observe plant growth and thereby achieve high efficiency plant culture.

Light is one of the important environmental factors in plant growth, mainly from the sun's radiation. The sun radiates from a very long wavelength of radio waves, far, medium, near infrared, visible, ultraviolet A, B, C, X-rays to a very short wavelength cosmic ray, a continuous spectrum It has the same properties as electric waves and is generally called electromagnetic waves. Among the solar radiation electromagnetic waves, there are three kinds of radiation that are most important for plant growth and development. In addition to visible light (380 ~ 780 nm), there are ultraviolet (ultra violet, UV, 100 ~ 380 nm) and infrared (infra-red, IR, 780 ~ 10 ⁵ nm).

The effects of light intensity, light quality and illumination time on plant effects include photosynthesis, chlorophyll synthesis, phototaxis, photoreceptor reaction, and photoperiod. Responses to animal effects include: lactation, egg production, and meat production.

Plant growth, development and photosynthesis are not only controlled by light intensity, but also by light quality; in addition, the time of illumination is also affected, thus causing a relatively complex process of light control plant growth and development. Plants use visible light for photosynthesis, using infrared light, especially 700-800 nm (nm) to control the morphogenesis of plant morphology, while ultraviolet light can be absorbed by biological proteins to cause damage. These reactions are produced primarily through three main receptor systems. Chlorophyll a and chlorophyll b absorb light at 640 nm and 660 nm, respectively, for photosynthesis. Phytochrome absorbs 660, 730 nm wavelength light to control many morphological reactions; and flavin absorbs 450 nm. Wavelength light causes tropism and high-energy photomorphogenesis.

Ultraviolet light with a wavelength between 300 and 400 nm and near-infrared light with a wavelength of 700 to 800 nm (far red light) can affect the biochemical reaction and appearance of the crop. Light between 400 and 700 nm is closely related to photosynthesis. The light in this band is called Photosynthetically Active Radiation (PAR).

The relationship between light quality and plant development, the most famous literature is the discussion of "Photo morphogenesis in Plant" by R.E. Kendrick and G.H.M. Kronenberg (1986, Martinus Nijhoff Publishers). The effects of different spectral ranges on plant physiology are shown in Table 1.

The photon energy emitted by the light source varies with wavelength. For example, the energy of the wavelength of 400 nm (blue light) is 1.75 times that of the energy of 700 nm (red light), but for photosynthesis, the effect of the two wavelengths is the same. The excess energy in the blue spectrum that cannot be used as photosynthesis is converted into heat. In other words, the plant photosynthesis rate is determined by the number of photons that can be absorbed by plants in the 400-700 nm, and is not related to the number of photons sent by each spectrum. Plants have different sensitivities to all spectra, mainly due to the special absorption of pigments in the leaves. Chlorophyll is the most common pigment in plants, but chlorophyll is not the only pigment useful for photosynthesis, and other pigments are also involved in photosynthesis. Therefore, photosynthesis efficiency can not only consider the absorption spectrum of chlorophyll. For plant morphological development and leaf color, plants should receive a variety of balanced light sources. Blue light sources (400~500 nm) are important for plant differentiation and stomata regulation. If the blue light is insufficient, the proportion of far red light is too much, and the stem will grow excessively, which is likely to cause yellowing of the leaves. Red light spectrum (655~665 nm) energy and far red spectrum (725~735 nm) energy The ratio is between 1.0 and 1.2, the development of the plants is normal, but the sensitivity of different plants to the spectral ratio is also different.

The photosynthesis photon flux is the number of photons with a wavelength range of 400-700 nm per unit area on a plane per unit time. The common unit is μmol/m ² /s or μE/m ² /s; The detector is a Quantum Sensor.

In addition to the photon number (μmol/m ² /s), the amount of light has illuminance and light energy (W/m ² ). Sensors are also divided into these three categories. The Photometric Sensor is used to measure visible light (380~780 nm) in units of Lux (=lumen/m ² ) or candlelight (fc=lumen/ft ² ). Illuminance sensors are generally not used in greenhouses because they are designed according to the human eye's contrast sensitivity curve, and the plant's sensitivity to light has another curve, which is different.

At present, the global greenhouse industry has entered the category of Controlled Environment Agriculture (CEA). The practice of environmentally controlled agriculture is to control the environment of animal and plant growth to facilitate its mass production, and to improve product quality and unit area and unit. Time capacity. The most suitable spectral wavelength range required by different plants has not yet been fully understood, and may vary depending on the plant type or variety, and the amount of illumination required for different spectral wavelengths will vary depending on the type of plant. The goal of environmentally-controlled agriculture is to understand the physiological and environmental impacts of other key factors on plant growth and fertility, and to regulate these factors to achieve the goal of increasing production capacity, shortening the labor process, and improving quality. Therefore, the spectral wavelength and the amount of irradiation required by the plant must be known in advance, and the productivity can be improved by controlling the irradiation amount of light of different wavelengths.

The invention provides a light quality accumulation calculation device, comprising: (a) a spectral sensing unit for measuring one light quality data in a spectral wavelength range; (b) a spectral multi-band setting module, connecting To the spectral sensing unit, to set the full-band or multi-band wavelength in the spectral wavelength range of the spectral sensing unit; (c) a light quality accumulation calculation module connected to the spectral sensing unit, The light quality data measured by the spectral sensing unit is cumulatively calculated into a cumulative light quality data; (d) a data processing unit coupled to the light quality cumulative computing module for processing and recording and storing the accumulated light Quality data; and (e) a control unit coupled to the spectral multi-band setting module and the data processing unit for controlling the setting of the spectral multi-band setting module and the data processing unit.

The light quality accumulation calculation device according to the present invention, wherein the spectral sensing unit is capable of simultaneously measuring all light quality data in the spectral wavelength range.

A light quality accumulation computing device according to the present invention, further comprising a display coupled to the data unit for displaying the recorded cumulative light quality data.

The light quality accumulation calculation device according to the present invention, wherein the spectral wavelength range is a full spectrum, 360 nm (nm) to 830 nm or 400 nm to 700 nm, and the unit of the light quality data is lux, μmol/ m ² /s or W/m ² .

According to the light quality accumulation calculation device of the present invention, in a preferred embodiment, the spectral sensing unit is a spectrometer, and the spectral multi-band setting module can overlap the spectral ranges of different bands.

The invention further provides a light quality accumulation calculation method, comprising: (a) providing a spectral sensing unit for measuring one light quality data in a spectral wavelength range; (b) providing a control unit for controlling one Setting a spectral multi-band setting module and a data processing unit; (c) setting the full-band or multi-band wavelength in the spectral wavelength range of the spectral sensing unit via the spectral multi-band setting module; (d) Providing a light quality cumulative calculation module for cumulatively calculating the light quality data measured by the spectral sensing unit into a cumulative light quality data; and (e) processing, recording, and storing the accumulation via the data processing unit Light quality data.

According to the light quality accumulation calculation method of the present invention, there is further provided a display for displaying the recorded cumulative light quality data.

The light quality accumulation calculation method according to the present invention, wherein the spectrum sensing unit is capable of simultaneously measuring all light quality data in the spectral wavelength range.

According to the light quality accumulation calculation method of the present invention, the spectral wavelength range is a full spectrum, 360 nm (nm) to 830 nm or 400 nm to 700 nm, and the unit of the light quality data is lux, μmol/ m ² /s or W/m ² .

According to the light quality accumulation calculation method of the present invention, in a preferred embodiment, the spectrum The sensing unit is a spectrometer, and the spectral multi-band setting module can overlap the spectral ranges of different bands.

100‧‧‧Light accumulation calculation device

101‧‧‧Spectrum sensing unit

102‧‧‧Spectral Multiband Setting Module

103‧‧‧Light Accumulation Calculation Module

104‧‧‧Data Processing Unit

105‧‧‧Control unit

106‧‧‧ display

201‧‧‧Receiving data from the spectrum sensing unit

202‧‧‧Select wavelength range

203‧‧400nm to 700nm

204‧‧‧360 nm ~ 830 nm

205‧‧‧Full spectrum

206‧‧‧View full-band wavelength range

207‧‧‧Select segmental wavelength range

208‧‧‧Light accumulation calculation

209‧‧‧Transferred to the data unit through the transfer interface

210‧‧ Real-time data

211‧‧‧Click on historical data

212‧‧‧Click to display the band, displayed on the screen

1 is a block diagram of a light quality accumulation calculation device of the present invention.

2 is a flow chart showing the implementation of the light quality accumulation calculation method of the present invention.

3 is a full-band optical quality data displayed by the optical quality accumulation computing device of the present invention.

4 is the light quality data of the wavelength of 400 nm to 450 nm displayed by the light quality accumulation calculation device of the present invention.

FIG. 5 is the light quality accumulation data of the wavelength of 400 nm to 450 nm displayed with time according to the light quality accumulation calculation device of the present invention.

Fig. 6 is a light quality data of a segmented wavelength displayed by the light quality accumulation calculating device of the present invention.

The following examples are not intended to limit the invention, but are merely representative of several aspects and features of the invention.

1 is a block diagram of a light quality accumulation computing device 100 of the present invention, which mainly includes: (a) a spectral sensing unit 101 for measuring light quality data in a spectral wavelength range; (b) a spectral multi-band The setting module 102 is connected to the spectrum sensing unit 101 to perform the setting of the full-band or multi-band wavelength in the spectral wavelength range of the spectrum sensing unit 101; (c) a light quality accumulation calculation module 103, Connected to the spectral sensing unit 101, the optical quality data measured by the spectral sensing unit 101 is cumulatively calculated into a cumulative optical quality data; (d) a data processing unit 104 coupled to the optical quality cumulative computing module a group 103 for processing and recording and storing the accumulated light quality data; and (e) a control unit 105 connected to the spectral multi-band setting module 102 and the data processing unit 104 for controlling the spectral multi-band setting The setting of the module 102 and the data processing unit 104. The light quality accumulation computing device 100 of the present invention further includes a display 106 coupled to the data processing unit 104 for displaying the recorded cumulative light quality data.

2 is a flow chart showing the implementation of the light quality accumulation calculation method of the present invention. The data is received from the spectral sensing unit by the spectral accumulation calculation device of the present invention and the wavelength range of 400 nm to 700 nm, 360 nm to 830 nm or full spectrum is selected via the control unit. Then choose to watch the full band or The cumulative light quality of the segmented wavelength range (eg, 400 nm to 450 nm, 430 nm to 460 nm, 470 nm to 500 nm, etc.). The light quality accumulation calculation is performed through the light quality accumulation calculation module, and transmitted to the data processing unit through the transmission interface. At this point, you can select the live data or click on the historical data and display the selected band on the screen.

Based on the above apparatus and flow, the specific implementation results of the light quality accumulation calculation device and method of the present invention are as follows: the full-band light quality data displayed by the light quality accumulation calculation device of the present invention is as shown in FIG. 3; the light quality accumulation calculation device of the present invention displays The light quality data of the wavelength of 400 nm to 450 nm is shown in Fig. 4. If the light quality data of the wavelength of 400 nm to 450 nm of Fig. 4 is accumulated over time, the 400 nm to 450 nm of Fig. 5 can be obtained. The cumulative data of the wavelength of the rice wavelength over time, the area formed under the fold line can be calculated to obtain the cumulative light intensity of the wavelength of 400 nm to 450 nm. 6 is the light quality data of the segment wavelength (for example, 400 nm to 450 nm, 470 nm to 500 nm, etc.) displayed by the light quality accumulation calculation device of the present invention, and the light quality data of each segment wavelength can also be used. The light quality accumulation data of each segment wavelength with time is calculated as shown in FIG. 5, and each segment wavelength range can be overlapped and set.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

100‧‧‧Light accumulation calculation device

101‧‧‧Spectrum sensing unit

102‧‧‧Spectral Multiband Setting Module

103‧‧‧Light Accumulation Calculation Module

104‧‧‧Data Processing Unit

105‧‧‧Control unit

106‧‧‧ display

Claims (8)

A light quality accumulation calculation device comprises: (a) a spectral sensing unit for measuring one light quality data in a spectral wavelength range; (b) a spectral multi-band setting module connected to the spectral sensing a unit for performing a full-band or multi-band wavelength setting in the spectral wavelength range of the spectral sensing unit; (c) a light quality accumulation calculation module coupled to the spectral sensing unit via which the spectral sensing is performed The light quality data measured by the unit is cumulatively calculated into a cumulative light quality data; (d) a data processing unit coupled to the light quality cumulative computing module for processing and recording and storing the accumulated light quality data; e) a control unit connected to the spectral multi-band setting module and the data processing unit for controlling the setting of the spectral multi-band setting module and the data processing unit, wherein the spectral multi-band setting module can be different The spectral range of the band is overlapped. The light quality accumulation calculation device of claim 1, further comprising a display connected to the data unit for displaying the recorded cumulative light quality data. For example, the light quality cumulative calculation device of claim 1 wherein the spectral wavelength range is full spectrum, 360 nm (nm) to 830 nm or 400 nm to 700 nm. The light quality accumulation calculation device of claim 1, wherein the spectral sensing unit is a spectrometer. The light quality accumulation calculation device of claim 1, wherein the unit of the light quality data is lux, μmol/m ² /s or W/m ² . A method for calculating light quality accumulation, comprising: (a) providing a spectral sensing unit for measuring light quality data in a spectral wavelength range; and (b) providing a control unit for controlling a spectral multi-band setting The setting of the module and a data processing unit; (c) setting the full-band or multi-band wavelength in the spectral wavelength range of the spectral sensing unit via the spectral multi-band setting module; (d) providing a light quality cumulative computing module for using the spectrum The light quality data measured by the sensing unit is cumulatively calculated into a cumulative light quality data; and (e) the cumulative light quality data is processed and recorded and stored via the data processing unit, wherein the spectral multi-band setting module can The spectral range of different bands is overlapped. For example, the calculation method of the light quality accumulation in the sixth application of the patent scope, wherein the spectral wavelength range is a full spectrum, 360 nm (nm) ~ 830 nm or 400 nm ~ 700 nm. The light quality accumulation calculation method of claim 6, wherein the unit of the light quality data is lux, μmol/m ² /s or W/m ² .